CECO Environmental (CECO) CEO logs tax-withheld stock share disposal

Rhea-AI Filing Summary

CECO Environmental Chief Executive Officer Todd R. Gleason reported a tax-related share disposition. On March 7, 2026, 3,557 shares of common stock were withheld at $52.53 per share to cover the tax liability from vesting restricted stock units.

After this tax-withholding disposition, Gleason directly holds 407,278 shares of CECO common stock, with additional indirect holdings of common stock reported for his children, plus multiple stock option and restricted stock unit positions.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gleason Todd R

(Last) (First) (Middle)

5080 SPECTRUM DRIVE

SUITE 800E

(Street)

ADDISON TX 75001

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CECO ENVIRONMENTAL CORP [ CECO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/07/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/07/2026		F(1)		3,557	D	$52.53	407,278	D
Common Stock								444	I	By first son
Common Stock								444	I	By second son
Common Stock								444	I	By third son
Common Stock								444	I	By daughter

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Option (right to buy)	$6.36							(2)	(2)	Common Stock	316,902		316,902	D
Stock Option (right to buy)	$12.72							(2)	(2)	Common Stock	598,204		598,204	D
Stock Option (right to buy)	$21.31							(3)	(3)	Common Stock	25,446		25,446	D
Stock Option (right to buy)	$23.5							(4)	(4)	Common Stock	67,347		67,347	D
Restricted Stock Units	(5)							(6)	(6)	Common Stock	225,000		225,000	D
Restricted Stock Units	(5)							(7)	(7)	Common Stock	150,000		150,000	D

Explanation of Responses:

1. Reflects shares withheld for net settlement to cover the tax liability for the vesting of restricted stock units.

2. The stock option vested in four installments beginning on June 6, 2021, and expires on June 6, 2027.

3. The stock option vests in three equal annual installments beginning on March 15, 2025, and expires on March 15, 2034.

4. The stock option vests in three equal annual installments beginning on March 17, 2026, and expires on March 17, 2035.

5. Represents performance-based restricted stock units. Each restricted stock unit represents a contingent right to receive one share of the Company's stock.

6. Conversion of restricted stock units to the Company's common stock will occur on July 5, 2027 assuming the reporting person is still employed by the Company and if the shares of the Company's common stock have achieved certain stock price targets over the course of the performance period.

7. Conversion of restricted stock units to the Company's common stock will occur on June 4, 2029 assuming the reporting person is still employed by the Company and if the shares of the Company's common stock have achieved certain stock price targets over the course of the performance period.

Remarks:

Exhibit 24: Power of Attorney

	/s/ Kiril Kovachev as Attorney-in-Fact for Todd Gleason	03/09/2026
	** Signature of Reporting Person	Date
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FAQ

What insider transaction did CECO (CECO) disclose for CEO Todd Gleason?

CECO reported that CEO Todd R. Gleason had 3,557 shares of common stock withheld to cover tax liabilities from vesting restricted stock units. The shares were valued at $52.53 each, reflecting a routine tax-withholding disposition rather than an open-market sale.

How many CECO shares were withheld for taxes in the latest Form 4?

The filing shows 3,557 CECO Environmental common shares were withheld to satisfy tax obligations tied to restricted stock unit vesting. This tax-withholding disposition used a reference price of $52.53 per share, based on the value at the time of the transaction.

What is CECO CEO Todd Gleason’s direct ownership after the reported transaction?

After the tax-withholding disposition, CEO Todd R. Gleason directly owns 407,278 shares of CECO common stock. The Form 4 also notes separate indirect holdings of common stock for his children, along with several stock option and restricted stock unit positions.

Were the CECO insider transactions open-market buys or sells?

The highlighted transaction is a tax-withholding disposition, coded “F,” where 3,557 shares were withheld to cover tax liabilities on restricted stock unit vesting. The data do not show open-market purchases or sales by the CEO in this specific Form 4 submission.

What equity awards for CECO’s CEO are referenced in the Form 4 footnotes?

Footnotes describe stock options vesting in installments between June 2021 and March 2026, expiring between 2027 and 2035, and performance-based restricted stock units. Some RSUs convert to common stock in 2027 and 2029 if employment and specified stock price targets are met.